Page 28 ex. 1
- antibiotics (1928)
- refrigerator (1913)
- television (1907)

Page 28 ex. 2
- I could live without mobile phone.
- I could live without credit car.
- I could live without radar.
- I could live without nuclear power.
- I could live without television.
- I couldn’t live without washing machine.
- I couldn’t live without refrigerator.
- I couldn’t live without antibiotics.
- I couldn’t live without jet engine.
- I couldn’t live without communications satellite.

Page 28 ex. 3
1. 2006
2. 1971
3. 2001
4. 1990
5. 1991
6. 1995
7. 1984
8. 2005

Page 29 ex. 4
1. V
2. V
3. F
4. V
5. F
6. V
7. F
8. V

Page 29 ex. 5
1. broadband
2. desktop computer
3. Internet server
4. keyboard
5. laptop
6. password
7. search engine
8. social networking site
9. text message
10. username
11. website

Page 29 ex. 6
1. text message
2. username
3. desktop computer
4. search engine
5. social networking site
6. Internet server

Page 29 ex. 7
1. click
2. download
3. follow
4. go
5. open
6. visit

Page 29 ex. 8
1. go
2. opened
3. on
4. follow
5. visit
6. downloaded

Page 29 ex. 9
1. V
2. F
3. V
4. V
5. V
6. V

Page 29 ex. 10
1. click on
2. hang up
3. switch on
4. scroll up
5. scroll down
6. log on